A maxillary lateral incisor with four root canals.

AIM To describe the successful non-surgical endodontic management of a permanent maxillary lateral incisor tooth with four root canals. SUMMARY Aberrant morphology of root canals can occur in any tooth, including maxillary lateral incisors. In the presented case, clinical examination and radiographs clearly depicted the presence of four root canals in a right maxillary lateral incisor. The differential diagnosis included fusion, gemination, dens invaginatus or a combination of these. The report emphasises the need for attention during root canal treatment of maxillary lateral incisors. KEY LEARNING POINTS • Clinicians should be aware of the variable root canal anatomy in maxillary lateral incisor teeth. • Careful examination of radiographs and the internal anatomy of teeth are essential prerequisites for successful root canal treatment. • Four root canals in maxillary lateral incisors is a possibility.